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Dapaah, H. K. and Essilfie, M. E. (2016). Maize varietal intercropping and productivity under rain-fed conditions in a forest-savannah transition zone. TROPICAL AGRICULTURE, 93,
Abstract
Field experiments were conducted at the University farm of the University of Education, Winneba, Mampong-Ashanti Campus, Ghana, during the major rainy seasons of 2010 and 2011 to evaluate the growth, yield and productivity of a maize varietal intercropping system as influenced by relative times of planting (RTP) and row spacing. Three relative times of planting [(i) simultaneous, (ii) early-maturing maize (Akposoe) planted 10 days before medium-maturing maize (Obatanpa) and (iii) medium-maturing maize (Obatanpa) planted 10 days before early-maturing maize (Akposoe) were combined with two row spacings [(i) 80 cm and (ii) 100 cm] in a 3 x 2 factorial arranged in a randomized complete block design with three replications. Sole Akposoe and Obatanpa were included as checks and to compare the productivity of the varietal intercrop options with the sole crops. The relative times of planting, row spacing and their interaction did not significantly influence the days to 50% tasselling (DFT) and days to 50% silking (DFS) of both maize varieties in both seasons. In both seasons, the plant height and total dry matter (TDM) accumulation of sole Akposoe and Obatanpa were greater than when both were intercropped. Among the intercrops, the plant height and TDM accumulation of both varieties when planted simultaneously were similar to when planted 10 days before the other, but greater than when delayed 10 days, for both seasons. Akposoe and Obatanpa intercrops spaced at 80 cm row spacing produced higher plant height and TDM accumulation than the 100 cm row spaced plants in both years. The sole Akposoe and Obatanpa out-yielded their intercropped counterparts by 12-53 % in both seasons. For the intercrops, the grain yield of Akposoe planted simultaneously with Obatanpa (1.71-2.12 t/ha) was similar to Akposoe planted 10 days before (DB) Obatanpa (1.80-2.20 t/ha), but out-yielded Akposoe planted 10 days after (DA) Obatanpa by 5-28 % in both seasons. The grain yield of Obatanpa planted simultaneously with Akposoe (3.38-4.78 t/ha) were also similar to the grain yield of Obatanpa planted 10 days before Akposoe (3.28-3.83 t/ha), but were 4-41 % greater than the yield of Obatanpa planted 10 days after Akposoe in 2010 and 2011. The 80 cm row spacing yielded 8-24 % and 11-26 % in 2010 and 2011, respectively, higher than the 100 cm row spacing. The varietal intercrops had higher productivity or land use ratios (1.12-1.76 for RTP and 1.14-1.80 for row spacing); and therefore, were 12-80% more productive and biologically more efficient than the sole crops in both seasons. Maize varietal intercropping produced higher total yield and was more productive under rain-fed conditions.
Field experiments were conducted at the University farm of the University of Education, Winneba, Mampong-Ashanti Campus, Ghana, during the major rainy seasons of 2010 and 2011 to evaluate the growth, yield and productivity of a maize varietal intercropping system as influenced by relative times of planting (RTP) and row spacing. Three relative times of planting [(i) simultaneous, (ii) early-maturing maize (Akposoe) planted 10 days before medium-maturing maize (Obatanpa) and (iii) medium-maturing maize (Obatanpa) planted 10 days before early-maturing maize (Akposoe) were combined with two row spacings [(i) 80 cm and (ii) 100 cm] in a 3 x 2 factorial arranged in a randomized complete block design with three replications. Sole Akposoe and Obatanpa were included as checks and to compare the productivity of the varietal intercrop options with the sole crops. The relative times of planting, row spacing and their interaction did not significantly influence the days to 50% tasselling (DFT) and days to 50% silking (DFS) of both maize varieties in both seasons. In both seasons, the plant height and total dry matter (TDM) accumulation of sole Akposoe and Obatanpa were greater than when both were intercropped. Among the intercrops, the plant height and TDM accumulation of both varieties when planted simultaneously were similar to when planted 10 days before the other, but greater than when delayed 10 days, for both seasons. Akposoe and Obatanpa intercrops spaced at 80 cm row spacing produced higher plant height and TDM accumulation than the 100 cm row spaced plants in both years. The sole Akposoe and Obatanpa out-yielded their intercropped counterparts by 12-53 % in both seasons. For the intercrops, the grain yield of Akposoe planted simultaneously with Obatanpa (1.71-2.12 t/ha) was similar to Akposoe planted 10 days before (DB) Obatanpa (1.80-2.20 t/ha), but out-yielded Akposoe planted 10 days after (DA) Obatanpa by 5-28 % in both seasons. The grain yield of Obatanpa planted simultaneously with Akposoe (3.38-4.78 t/ha) were also similar to the grain yield of Obatanpa planted 10 days before Akposoe (3.28-3.83 t/ha), but were 4-41 % greater than the yield of Obatanpa planted 10 days after Akposoe in 2010 and 2011. The 80 cm row spacing yielded 8-24 % and 11-26 % in 2010 and 2011, respectively, higher than the 100 cm row spacing. The varietal intercrops had higher productivity or land use ratios (1.12-1.76 for RTP and 1.14-1.80 for row spacing); and therefore, were 12-80% more productive and biologically more efficient than the sole crops in both seasons. Maize varietal intercropping produced higher total yield and was more productive under rain-fed conditions.
Essilfie, M. E., Ofosu-Anim, J., Dapaah, H. K., Blay, E. T. and Norman, J. C. (2016). Yield and Root Quality of Two Sweetpotato (Ipomoea batatas [L.] Lam) Varieties as Influenced by Chicken Manure, Inorganic Fertilizer and Storage Methods. American Journal of Experimental Agriculture, 11,
Abstract
Two field experiments were conducted at two seasons at the University of Education, Winneba, Mampong-Ashanti campus to investigate the responses of the yield and root quality of two varieties of sweetpotato (Apomuden and Okumkom) to chicken manure and inorganic fertilizers and storage methods. The experimental design used for the experiment was a 2 x 8 factorial arranged in randomized complete block design with four replicates in both seasons. The application of 15-15-15 kg/ha NPK+ 5t/ha CM and 15-30-30 kg/ha NPK + 5t/ha CM to Apomuden produced thicker vine diameter and dry matter accumulation respectively during the major season while Okumkom grown on 30-30-30 kg/ha NPK gave longer vine length in the same season. However, the application of amended treatments to both varieties decreased root quality (root crack) during the major season and increased pest infested roots during the minor season. Okumkom grown on 15-15-15 kg/ha NPK+ 5t/ha CM plot produced higher forked roots at harvest in both seasons. Okumkom grown on 30-45-45 kg/ha NPK and 30-60-60 kg/ha NPK plots had increased root sugar and starch content at harvest during the major season. Both varieties, whether treated or untreated had decreased starch content at 12 weeks in storage than at harvest in both seasons. Pit storage showed the most effective storage method in terms of root starch and sugar content in both seasons followed by ash and grass storage methods.
Two field experiments were conducted at two seasons at the University of Education, Winneba, Mampong-Ashanti campus to investigate the responses of the yield and root quality of two varieties of sweetpotato (Apomuden and Okumkom) to chicken manure and inorganic fertilizers and storage methods. The experimental design used for the experiment was a 2 x 8 factorial arranged in randomized complete block design with four replicates in both seasons. The application of 15-15-15 kg/ha NPK+ 5t/ha CM and 15-30-30 kg/ha NPK + 5t/ha CM to Apomuden produced thicker vine diameter and dry matter accumulation respectively during the major season while Okumkom grown on 30-30-30 kg/ha NPK gave longer vine length in the same season. However, the application of amended treatments to both varieties decreased root quality (root crack) during the major season and increased pest infested roots during the minor season. Okumkom grown on 15-15-15 kg/ha NPK+ 5t/ha CM plot produced higher forked roots at harvest in both seasons. Okumkom grown on 30-45-45 kg/ha NPK and 30-60-60 kg/ha NPK plots had increased root sugar and starch content at harvest during the major season. Both varieties, whether treated or untreated had decreased starch content at 12 weeks in storage than at harvest in both seasons. Pit storage showed the most effective storage method in terms of root starch and sugar content in both seasons followed by ash and grass storage methods.
Essilfie, M. E. Ofosu-Anim,J., Dapaah, K. H., Norman, J. C. and Blay,E. T. (2016). Growth and Yield of Sweetpotato (Ipomoea batatas [L.] Lam) as Influenced by Chicken Manure and Inorganic Fertilizers. American Journal of Experimental Agriculture, 11,
Abstract
Aims: To assess the growth, yield and yield components of two varieties of sweetpotato as influenced by chicken manure and inorganic fertilizers. Study Design: The experimental design was a 2 x 8 factorial arranged in randomized complete block design with four replicates for both seasons. Place and Duration of Study: Field experiments were conducted at the multipurpose crop nursery of the University of Education, Winneba, Mampong-Ashanti from September, 2011 to January, 2012 (minor season) and from April to August, 2012 (major season). Methodology: Two sweetpotato varieties (Okumkom and Apomuden) and eight fertilizer treatments [(i) 10 t ha-1 chicken manure (CM), (ii) 30-30-30 kg/ha NPK, (iii) 15-15-15 kg/ha NPK + 5 t ha-1 CM, (iv) 30-45-45 kg/ha NPK, (v) 15-23-23 kg/ha NPK + 5 t ha-1 CM, (vi) 30-60-60 kg/ha NPK, (vii) 15-30-30 kg/ha NPK + 5 t ha-1 CM and (viii) No fertilizer (control)] were studied. Results: Okumkom differed significantly from Apomuden in number of leaves per plant, number of branches and vine fresh weight in both seasons. Apomuden grown on 30 45-45 kg/ha NPK and 30- 30-30 kg/ha NPK produced significantly higher number of marketable tubers and total tuber yield during the minor season. Tuber length and number of marketable tubers of Apomuden was significantly influenced by the application of 15 – 30 – 30 kg/ha NPK + 5 t ha-1 CM during the major season. Correlation analyses in both seasons show that the vegetative characters were significantly and positively correlated. On the other hand, number of leaves per plant was negatively correlated to the total tuber weight, marketable tuber number and marketable tuber weight. Conclusion: Farmers are encouraged to grow Apomuden on 15-30-30 kg/ha NPK + 5 t ha-1 CM for high marketable tuber number in both seasons. For high vegetative biomass as fodder for animals farmers are to grow Okumkom in both seasons.
Aims: To assess the growth, yield and yield components of two varieties of sweetpotato as influenced by chicken manure and inorganic fertilizers. Study Design: The experimental design was a 2 x 8 factorial arranged in randomized complete block design with four replicates for both seasons. Place and Duration of Study: Field experiments were conducted at the multipurpose crop nursery of the University of Education, Winneba, Mampong-Ashanti from September, 2011 to January, 2012 (minor season) and from April to August, 2012 (major season). Methodology: Two sweetpotato varieties (Okumkom and Apomuden) and eight fertilizer treatments [(i) 10 t ha-1 chicken manure (CM), (ii) 30-30-30 kg/ha NPK, (iii) 15-15-15 kg/ha NPK + 5 t ha-1 CM, (iv) 30-45-45 kg/ha NPK, (v) 15-23-23 kg/ha NPK + 5 t ha-1 CM, (vi) 30-60-60 kg/ha NPK, (vii) 15-30-30 kg/ha NPK + 5 t ha-1 CM and (viii) No fertilizer (control)] were studied. Results: Okumkom differed significantly from Apomuden in number of leaves per plant, number of branches and vine fresh weight in both seasons. Apomuden grown on 30 45-45 kg/ha NPK and 30- 30-30 kg/ha NPK produced significantly higher number of marketable tubers and total tuber yield during the minor season. Tuber length and number of marketable tubers of Apomuden was significantly influenced by the application of 15 – 30 – 30 kg/ha NPK + 5 t ha-1 CM during the major season. Correlation analyses in both seasons show that the vegetative characters were significantly and positively correlated. On the other hand, number of leaves per plant was negatively correlated to the total tuber weight, marketable tuber number and marketable tuber weight. Conclusion: Farmers are encouraged to grow Apomuden on 15-30-30 kg/ha NPK + 5 t ha-1 CM for high marketable tuber number in both seasons. For high vegetative biomass as fodder for animals farmers are to grow Okumkom in both seasons.
Essilfie, M. E., Dapaah, H. K., Ofosu-Anim, J., Blay, E. T. and Norman, J. C. (2016). Effect of Different Storage Methods and Fertilizer Rates on Quality of Sweetpotato (Ipomoea batatas L.) Storage Roots. International Journal of Plant & Soil Science, 10,
Abstract
Storage of fresh roots of two sweetpotato varieties (Apomuden and Okumkom) for up to 12 weeks was conducted from January to March, 2011 (minor cropping season) and from August to October, 2012 (major cropping season) using three storage methods by pit, ash, and grass. Roots were harvested at week 16 after planting. Sweetpotato was previously amended by treatments of chicken manure (CM) and inorganic fertilizer (NPK). The experimental design was randomized complete block. The result shows that Apomuden grown under amended and control plots and stored in grass, ash or pit did not differ significantly from Okumkom grown under the same treatment. Okumkom applied with 15-30-30 kg/ha NPK + 5t/ha CM and stored in grass gave lowest pest infested roots in both seasons. There was a significant difference between Apomuden and Okumkom grown under amended and control plots and stored in ash, grass and pit in weight loss of roots in both seasons. There was no significant difference between Apomuden and Okumkom grown under amended and control plots and stored in pit in root sprout during the major cropping season storage. However, Okumkom and Apomuden stored in pit had higher root sprout compared with ash or grass during the major cropping season. Okumkom applied with 15-15-15 kg/ha NPK +5t/ha CM and 30 – 45 – 45 kg/ha NPK and stored in grass did not sprout at 12 weeks after storage in both seasons. Okumkom applied with 15-30-30 kg/ha NPK + 5t/ha CM and 15-15-15 kg/ha NPK +5t/ha CM and stored in grass produced the least pest infestation, lower root weight and root sprout compared with Apomuden on the same treatment. There was no significant difference between Apomuden and Okumkom grown under amended and control plots and stored in grass, ash or pit in rotten roots during both storage periods. However, for lower rotten roots, the amended roots should be stored in pit than in grass or ash.
Storage of fresh roots of two sweetpotato varieties (Apomuden and Okumkom) for up to 12 weeks was conducted from January to March, 2011 (minor cropping season) and from August to October, 2012 (major cropping season) using three storage methods by pit, ash, and grass. Roots were harvested at week 16 after planting. Sweetpotato was previously amended by treatments of chicken manure (CM) and inorganic fertilizer (NPK). The experimental design was randomized complete block. The result shows that Apomuden grown under amended and control plots and stored in grass, ash or pit did not differ significantly from Okumkom grown under the same treatment. Okumkom applied with 15-30-30 kg/ha NPK + 5t/ha CM and stored in grass gave lowest pest infested roots in both seasons. There was a significant difference between Apomuden and Okumkom grown under amended and control plots and stored in ash, grass and pit in weight loss of roots in both seasons. There was no significant difference between Apomuden and Okumkom grown under amended and control plots and stored in pit in root sprout during the major cropping season storage. However, Okumkom and Apomuden stored in pit had higher root sprout compared with ash or grass during the major cropping season. Okumkom applied with 15-15-15 kg/ha NPK +5t/ha CM and 30 – 45 – 45 kg/ha NPK and stored in grass did not sprout at 12 weeks after storage in both seasons. Okumkom applied with 15-30-30 kg/ha NPK + 5t/ha CM and 15-15-15 kg/ha NPK +5t/ha CM and stored in grass produced the least pest infestation, lower root weight and root sprout compared with Apomuden on the same treatment. There was no significant difference between Apomuden and Okumkom grown under amended and control plots and stored in grass, ash or pit in rotten roots during both storage periods. However, for lower rotten roots, the amended roots should be stored in pit than in grass or ash.
Essilfie, M. E., Dapaah, H. K., Tevor, J. W. and Darkwa, K. (2016). Number of Nodes and Part of Vine Cutting Effect on the Growth and Yield of Sweetpotato (Ipomoea batatas (L.) Lam) in Transitional Zone of Ghana. International Journal of Plant & Soil Science, 9,
Abstract
Two field experiments were conducted at the Multipurpose crop nursery of the University of Education, Winneba, Mampong campus from May to September, 2013 and June to October, 2014 respectively to investigate into the effect of number of nodes (4, 5 and 6) and vine part (apical and semiwoody) on the growth and yield of sweetpotato. The results from both seasons showed that many of the characters measured increased with increase node number up to 6 nodes and with apical vine part. The apical vine cuttings established earlier than semiwoody cuttings in both seasons. Node numbers did not have significant effect on any of the yield characters measured although the 5 and 6 node cuttings gave higher marketable tuber weight per plot, tuber length and marketable tuber number per plot than the 4 node cuttings during 2014 growing season. The 5 node apical cuttings produced significantly higher vegetative biomass than 5 node semiwoody and the 4 and 6 node apical and semiwoody cuttings.
Two field experiments were conducted at the Multipurpose crop nursery of the University of Education, Winneba, Mampong campus from May to September, 2013 and June to October, 2014 respectively to investigate into the effect of number of nodes (4, 5 and 6) and vine part (apical and semiwoody) on the growth and yield of sweetpotato. The results from both seasons showed that many of the characters measured increased with increase node number up to 6 nodes and with apical vine part. The apical vine cuttings established earlier than semiwoody cuttings in both seasons. Node numbers did not have significant effect on any of the yield characters measured although the 5 and 6 node cuttings gave higher marketable tuber weight per plot, tuber length and marketable tuber number per plot than the 4 node cuttings during 2014 growing season. The 5 node apical cuttings produced significantly higher vegetative biomass than 5 node semiwoody and the 4 and 6 node apical and semiwoody cuttings.
Essilfie, M. E., Dapaah, H. K., Ofosu-Anim, J., Blay, E. T. and Norman, J. C. (2016). Assessment of Changes in Beta-carotene Content and Sensory Attributes of Two Sweet Potato Varieties as Influenced by Organic and Inorganic Fertilizers and Storage Methods. Journal of Applied Life Sciences International, 4,
Abstract
Two field experiments were conducted at two seasons at the research fields of the University of Education, Winneba-Mampong campus from September, 2011 to January, 2012 and April to July, 2012 to assess changes in beta-carotene content and sensory attributes of two sweet potato varieties (Okumkom and Apomuden) grown under organic and inorganic fertilizers and three different storage methods in Ghana. Cooked samples of the harvested sweet potato roots were evaluated for their sensory attributes. In the storability studies, the harvested roots were sorted, cured and stored under three storage methods for 3 months. The beta- carotene changes in the stored roots were assessed. There was a significant difference (p<0.05) between Apomuden and Okumkom grown under amendment and the control in beta-carotene content at harvest and in pit store in both seasons. The beta- carotene content of Apomuden increased by 15-30% in pit store during the minor season than at harvest. Both varieties grown under amendment and the control and stored in pit was the most effective storage method in terms of beta-carotene over ash and grass storage in both seasons. There was a significant difference (p<0.05) between Okumkom and Apomuden in root texture and palatability at harvest and after cooking during the minor season. Apomuden differed significantly (p<0.05) from Okumkom in root colour and flavour at harvest and after cooking during the major season. The application of 30-45-45 kg/ha NPK to both varieties was more acceptable with regard to root taste, colour and palatability than the other treatments during the minor season.
Two field experiments were conducted at two seasons at the research fields of the University of Education, Winneba-Mampong campus from September, 2011 to January, 2012 and April to July, 2012 to assess changes in beta-carotene content and sensory attributes of two sweet potato varieties (Okumkom and Apomuden) grown under organic and inorganic fertilizers and three different storage methods in Ghana. Cooked samples of the harvested sweet potato roots were evaluated for their sensory attributes. In the storability studies, the harvested roots were sorted, cured and stored under three storage methods for 3 months. The beta- carotene changes in the stored roots were assessed. There was a significant difference (p<0.05) between Apomuden and Okumkom grown under amendment and the control in beta-carotene content at harvest and in pit store in both seasons. The beta- carotene content of Apomuden increased by 15-30% in pit store during the minor season than at harvest. Both varieties grown under amendment and the control and stored in pit was the most effective storage method in terms of beta-carotene over ash and grass storage in both seasons. There was a significant difference (p<0.05) between Okumkom and Apomuden in root texture and palatability at harvest and after cooking during the minor season. Apomuden differed significantly (p<0.05) from Okumkom in root colour and flavour at harvest and after cooking during the major season. The application of 30-45-45 kg/ha NPK to both varieties was more acceptable with regard to root taste, colour and palatability than the other treatments during the minor season.
Arthur,Y.D, Asiedu-Addo,S.& Harris,E., (2015). Statistical Software Packages (SSPs) Integration In Teaching And Learning Of Statistics In Ghanaian Tertiary Institution. 7th International Conference on Teaching , Education and Learning (ICTEL). : International Journal of Social Sciences.
Abstract
To address the impact of statistical software package integration in the teaching and learning of statistics by examining the effect of training lecturers in the use of statistical software packages(SSPs) on their intension to use the packages. The research used multimode survey technique. University of education, Winneba-Kumasi campus, Kwame Nkrumah University of Science and Technology, University of mines and Technology, University of Energy and Natural Resources, from January –February,2015. The paper deploys quantitative research methodology using purposive sampling of lecturers, demonstrators and teaching assistant in mathematics and statistics. Four public universities in Ghana were sampled. The data collected was subjected to SmartPLS second generation multivariate structural Equation Modeling (SEM) in the computation of relevant statistics. The paper used sample of 98 respondents purposively selected from the participating institutions. Test of validity and reliability was conducted to ascertain data credibility and consistency of the measurement as well as measurement and structural models. The data proved reliable with cronbacks square of the cronback values greater than 0.7.The results of the analysis indicate that there is a positive significant relationship between training programs university leadership organized for their lecturers in mathematics and statistical and the perceived ease of use, perceived usefulness, attitude and assertiveness of the lecturers to uses the SSPs and lecturer’s intension to use SSPs. Conclusion: The finding of this paper has confirm the previous research output on the effectiveness of Technology Acceptance Model(TAM) framework and has further extended the theory of TAM to help predict the lecturers intension to use statistical software packages in the teaching and learning of statistics.
To address the impact of statistical software package integration in the teaching and learning of statistics by examining the effect of training lecturers in the use of statistical software packages(SSPs) on their intension to use the packages. The research used multimode survey technique. University of education, Winneba-Kumasi campus, Kwame Nkrumah University of Science and Technology, University of mines and Technology, University of Energy and Natural Resources, from January –February,2015. The paper deploys quantitative research methodology using purposive sampling of lecturers, demonstrators and teaching assistant in mathematics and statistics. Four public universities in Ghana were sampled. The data collected was subjected to SmartPLS second generation multivariate structural Equation Modeling (SEM) in the computation of relevant statistics. The paper used sample of 98 respondents purposively selected from the participating institutions. Test of validity and reliability was conducted to ascertain data credibility and consistency of the measurement as well as measurement and structural models. The data proved reliable with cronbacks square of the cronback values greater than 0.7.The results of the analysis indicate that there is a positive significant relationship between training programs university leadership organized for their lecturers in mathematics and statistical and the perceived ease of use, perceived usefulness, attitude and assertiveness of the lecturers to uses the SSPs and lecturer’s intension to use SSPs. Conclusion: The finding of this paper has confirm the previous research output on the effectiveness of Technology Acceptance Model(TAM) framework and has further extended the theory of TAM to help predict the lecturers intension to use statistical software packages in the teaching and learning of statistics.
Arthur,Y.D, Asiedu-Addo,S.& Annan,J, (2016). Investigation of the Effect of Lecturers' Attributes on Students' Interest in Learning Statistic Ghanaian Tertiary Institutions. ICHE 2016 : 18th International Conference on Higher Education. Boston, USA: International Journal of Educational and Pedagogical Sciences.
Abstract
The study aims to explore the relational effect of lecturers’ personal attribute on student’s interest in statistics. In this study personal attributes of lecturers’ such as lecturer’s dynamism, communication strategies and rapport in the classroom as well as applied knowledge during lecture were examined. Here, exploratory research design was used to establish the effect of lecturer’s personal attributes on student’s interest. Data were analyzed by means of confirmatory factor analysis and structural equation modeling (SEM) using the SmartPLS 3 program. The study recruited 376 students from the faculty of technical and vocational education of the University of Education Winneba Kumasi campus, and Ghana Technology University College as well as Kwame Nkrumah University of science and Technology. The results revealed that personal attributes of an effective lecturer were lecturer’s dynamism, rapport, communication and applied knowledge contribute (52.9%) in explaining students interest in statistics. Our regression analysis and structural equation modeling confirm that lecturers personal attribute contribute effectively by predicting student’s interest of 52.9% and 53.7% respectively. The paper concludes that the total effect of a lecturer’s attribute on student’s interest is moderate and significant. While a lecturer’s communication and dynamism were found to contribute positively to students’ interest, they were insignificant in predicting students’ interest. We further showed that a lecturer’s personal attributes such as applied knowledge and rapport have positive and significant effect on tertiary student’s interest in statistic, whilst lecturers’ communication and dynamism do not significantly affect student interest in statistics; though positively related.
The study aims to explore the relational effect of lecturers’ personal attribute on student’s interest in statistics. In this study personal attributes of lecturers’ such as lecturer’s dynamism, communication strategies and rapport in the classroom as well as applied knowledge during lecture were examined. Here, exploratory research design was used to establish the effect of lecturer’s personal attributes on student’s interest. Data were analyzed by means of confirmatory factor analysis and structural equation modeling (SEM) using the SmartPLS 3 program. The study recruited 376 students from the faculty of technical and vocational education of the University of Education Winneba Kumasi campus, and Ghana Technology University College as well as Kwame Nkrumah University of science and Technology. The results revealed that personal attributes of an effective lecturer were lecturer’s dynamism, rapport, communication and applied knowledge contribute (52.9%) in explaining students interest in statistics. Our regression analysis and structural equation modeling confirm that lecturers personal attribute contribute effectively by predicting student’s interest of 52.9% and 53.7% respectively. The paper concludes that the total effect of a lecturer’s attribute on student’s interest is moderate and significant. While a lecturer’s communication and dynamism were found to contribute positively to students’ interest, they were insignificant in predicting students’ interest. We further showed that a lecturer’s personal attributes such as applied knowledge and rapport have positive and significant effect on tertiary student’s interest in statistic, whilst lecturers’ communication and dynamism do not significantly affect student interest in statistics; though positively related.
Arthur,Y.D Oduro,F.T.& Obeng-Denteh, W. (2016). Statistical Analysis of Hourly Solar Radiation in Kumasi –Ghana: Bayesian Approach. Journal of Scientific Research & Reports, 10,
Abstract
The solar radiation has been known to have skewed distribution rather than normally distributed irrespective of how large the sample size. The Bayesian statistical analysis of the solar radiation sort to find out from the Bayesian perspective how solar radiation is distributed in Ghana. The paper assumed a beta distribution as the conjugate prior for the solar radiation. The posterior distribution for p where p is the probability of sunshine was determined using the Bernoulli probability distribution. In this paper the random variable X represents the event of having a high or low sunshine base on the threshold of 120kWhm-2.A randomly selected sample of size of 1500 from each month of the year was used in the analysis. Based on the threshold value the total number of sunshine hours was calculated to help in the computation of posterior beta distribution parameters. The Bayesian analysis from the month of January through December were found to converge both for the prior and posterior mean and variances at a tolerance level of 0.0001 and0.00001 respectively after twenty iterations. The paper confirms that there are two clusters of which the solar radiation can be placed and that these cluster all converges after twenty iteration. The prior means and posterior mean converges to 0.86000 and .76000 at the tolerance level of 0.0001 respectively while the prior and posterior variances for cluster one and two converged to 6.0E-06 and 4.0E-06 respectively at 0.000001 tolerance level. The papers finally conclude that the clusters have a greater possibility (.86000 and 0.76000) of sunshine. This is also an indication that Kumasi has higher possibility of sunshine.
The solar radiation has been known to have skewed distribution rather than normally distributed irrespective of how large the sample size. The Bayesian statistical analysis of the solar radiation sort to find out from the Bayesian perspective how solar radiation is distributed in Ghana. The paper assumed a beta distribution as the conjugate prior for the solar radiation. The posterior distribution for p where p is the probability of sunshine was determined using the Bernoulli probability distribution. In this paper the random variable X represents the event of having a high or low sunshine base on the threshold of 120kWhm-2.A randomly selected sample of size of 1500 from each month of the year was used in the analysis. Based on the threshold value the total number of sunshine hours was calculated to help in the computation of posterior beta distribution parameters. The Bayesian analysis from the month of January through December were found to converge both for the prior and posterior mean and variances at a tolerance level of 0.0001 and0.00001 respectively after twenty iterations. The paper confirms that there are two clusters of which the solar radiation can be placed and that these cluster all converges after twenty iteration. The prior means and posterior mean converges to 0.86000 and .76000 at the tolerance level of 0.0001 respectively while the prior and posterior variances for cluster one and two converged to 6.0E-06 and 4.0E-06 respectively at 0.000001 tolerance level. The papers finally conclude that the clusters have a greater possibility (.86000 and 0.76000) of sunshine. This is also an indication that Kumasi has higher possibility of sunshine.
Arthur,Y.D, Asiedu-Addo,S.& Annan,J (2015). Student Mathematics Interest in Ghana: The Role of Parent Interest, Gender, Basic School Attended and Fear of Basic School Mathematics Teacher. Advances in Research, 5,
Abstract
To ensure successful learning and advanced achievement, subject-specific interest is essential. While many factors and strategies may be important in building a student’s interest in mathematics, variables such as the type of basic schools attended, parents’ interest in mathematics as well as the fear of imposed on students by their basic school teachers have not be completely investigated in the Ghanaian education system. Towards this goal, the current paper addresses the effect of parent interest, the type of basic school attended, the fear imposed by basic school mathematics teacher on a student’s interest in mathematics. Using descriptive and inferential statistical methods, data collected from 260 post senior high school student through structured questionnaires was analyzed.The study found that parent interest and value for mathematics significantly influenced students interest and joy in solving mathematical problems. Moreover, we also observed that the fear imposed by basic school mathematics teachers was found to significantly influence students’ interest. The study further found that the type of basic school attended and gender are factors that do not influence students’ interest in mathematics. In addition to concluding that a student’s interest is influenced by both parent interest and the fear of basic school mathematics teacher, the study also showed that the type of basic school attended and gender does not affect the students’ interest in mathematics.
To ensure successful learning and advanced achievement, subject-specific interest is essential. While many factors and strategies may be important in building a student’s interest in mathematics, variables such as the type of basic schools attended, parents’ interest in mathematics as well as the fear of imposed on students by their basic school teachers have not be completely investigated in the Ghanaian education system. Towards this goal, the current paper addresses the effect of parent interest, the type of basic school attended, the fear imposed by basic school mathematics teacher on a student’s interest in mathematics. Using descriptive and inferential statistical methods, data collected from 260 post senior high school student through structured questionnaires was analyzed.The study found that parent interest and value for mathematics significantly influenced students interest and joy in solving mathematical problems. Moreover, we also observed that the fear imposed by basic school mathematics teachers was found to significantly influence students’ interest. The study further found that the type of basic school attended and gender are factors that do not influence students’ interest in mathematics. In addition to concluding that a student’s interest is influenced by both parent interest and the fear of basic school mathematics teacher, the study also showed that the type of basic school attended and gender does not affect the students’ interest in mathematics.
